package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        log.info("用户执行登录操作");
//        ①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

//        ②. 根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

//        ③. 如果没有查询到, 则返回登录失败结果
        if (emp == null){
            log.info("用户名或密码错误!");
            return R.error("用户名或密码错误");
        }

//        ④. 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            log.info("用户名或密码错误!");
            return R.error("用户名或密码错误");
        }

//        ⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0){
            log.info("该账号被禁用, 请联系管理员!");
            return R.error("账号已禁用");
        }

//        ⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R logout(HttpServletRequest request){
        log.info("用户执行退出操作");
        request.getSession().invalidate();
        return R.success();
    }

    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，{}",employee.toString());
        //初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        /*//赋值当前登录用户
        Long employeeId = (Long) request.getSession().getAttribute("employee");

        employee.setStatus(1);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(employeeId);
        employee.setUpdateUser(employeeId);
*/
        employeeService.save(employee);
        return R.success();


    }

    /**
     * 分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page<Employee>> page(Integer page,Integer pageSize,String name){
        //构造分页条件
        Page<Employee> pageInfo = new Page<>(page,pageSize);

        //构造查询条件
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //构造搜索条件,name进行模糊匹配
        lambdaQueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //构建排序条件,更新时间倒序排列
        lambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询,返回结果
        employeeService.page(pageInfo,lambdaQueryWrapper);
        return R.success(pageInfo);

        //
    }


    /**
     * 更新员工数据(状态)
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R update(HttpServletRequest request,@RequestBody Employee employee){
        log.info("更新员工数据,{}",employee.toString());
       /* //获取当前登录用户信息
        Long employeeId = (Long) request.getSession().getAttribute("employee");

        //更新字段
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(employeeId);*/

        //根据ID更新
        employeeService.updateById(employee);
        return R.success();
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");
    }

}
